Scaffold the Livewire Material package

The skeleton for nonameweb/livewire-material: service provider and config
(unprefixed components, blade-icons' own <x-icon> switched off, an opt-in
showcase at /material), the Testbench Workbench with its Vite build, the
CSS and JS entry points applications import, the Boost guideline and skill
with a drift test, and Gitea CI running Pint, feature tests on PHP 8.4 and
8.5, and browser tests in Chrome, Firefox and Safari.

The plan moved here from SealShare: docs/plans/livewire-material.md.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01V9NnLxnPp8vaaurb3Z1MFy

.gitattributes

@@ -0,0 +1,19 @@
+* text=auto eol=lf
+
+*.woff2 binary
+
+# Development only: kept out of the archives Composer installs.
+/.editorconfig export-ignore
+/.gitattributes export-ignore
+/.github export-ignore
+/.gitignore export-ignore
+/bin export-ignore
+/docs export-ignore
+/package-lock.json export-ignore
+/package.json export-ignore
+/phpunit.xml export-ignore
+/pint.json export-ignore
+/testbench.yaml export-ignore
+/tests export-ignore
+/vite.config.js export-ignore
+/workbench export-ignore